Starting device for internal-combustion engines.



H. BJANDERSQN.

STARTING DEVICE FOR INTERNAL COMBUSTION ENGINES.

APPLICATION FILED OCT. 31. 1911.

1; Patented J n l y (1915.

HAROLD B. ANDERSON, OF LAKEWOOD, OHIO.

Specification of Letters Patent.

Patented July 6, 1915.

Application filed October 31, 1911. Serial No. 657,840.

To all whom it may concern:

Be it known that I, HAROLD B. ANDERSON, a citizen of the United States, residing at Lakewood, in the county of Cuyahoga and State of Ohio, have invented a certain new and useful Improvement in Starting Devices for Internal-Combustion Engines, of which the following is a full, clear, and exact description, reference-being had to the accompanying drawings.

This invention relates to starting mechanism' for internal combustion engines and moreespecially to mechanism of the type in which gaseous fuel (such as acetylene or acetylene mixed with air) is supplied to the cylinders of such engines for the purpose of preliminarily starting the same without the necessity for cranking.

In the specific form of my invention disclosed herein there is embodied a spark plug,

which is so constructed as to have a chamber or passageway extending outside of the cylinder and receiving thegaseous fuel at a point outside the cylinder, the inner end of the chamber surrounding the spark point or terminal carried by the inner part of the plug; also the gaseous fuel conduit is connected to the plug and chamber in a particularly effective and convenient manner.

It is the general object of my invention to provide an efficient construction for supplying such gaseous fuel to the engine cylinder at a point where the highest efficiency and certainty of ignition are attainable.

The invention contemplates further the provision of an efficient form of spark plug in conjunction with which reliable preliminary starting may be effected.

btill further and generally stated, my invention may be defined as consisting of the combinations of elements embodied in the claims hereto annexed and illustrated in the drawings accompanying and forming part hereof, wherein- Figure 1 represents a sectionalview through a spark plug constructed in accord ance with my invention and through the head of the cylinder to whichv the plug is applied, as well as through a portion of the supply conduit and supporting frame or yoke. Fig. 2 represents a plan view of the plug, conduit, and frame or yoke shown in the preceding figure.

Describing the parts illustrated herein by reference characters, 1 represents the head onothe'r suitable portion of a cylinder of an internal combustion'engine. This head is provlded with a threaded aperture 2 for the application of the spark plug which will now be described.

The plug illustrated herein comprises the lnner terminal having the point 3, said point being inclosed in a suitable shell 4 of insulatlng material, such as porcelain; 5 denotes a casing, the outer portion 6 of which is angular for the application of a wrench, said casing being provided with an intermediate reduced threaded portion 7 adapted to be screwed into the cylinder head. The casing 5 surrounds the inner portions 3 and 4 of the plug and forms a chamber therewith which extends outwardly a considerable distance beyond the cylinder wall or head 1.

At' its inner end, the casing is shown as provided with a terminal point 8 cooperating with the point 8 in the usual manner for the production of a spark. Surrounding the body4 of the plug is a packing nut 9 having its inner end threaded into the outer end 6 of the casing 5.

For-the purpose of supplying preliminary starting fluid to the cylinder, the following construction is provided: 10 denotes a pair of substantially diametrically opposed bores or passages extending'from the chamber of the casing 5 outwardly through the portion 6 of said casing, each bore or pas-' apertures is internally threaded for the reception of the screw 13, which screw is provided with a conical end 14 adapted to seat within the recess 11 and effectually close the librt 10 adjacent thereto. The aperture in the other arm of the yoke or supporting frame is for the reception of an enlargement or bushing 15 formed or provided on the gaseous fuel duct 16. The bushing 15 may be brazed to or otherwise made in effect a part of the supply, conduit 16. The composite end 17 thus formed is located within the yoke or frame 12and is conical in shape in order to form a tight seat within the conical recess 11.

From the foregoing construction and description, it is believed that the operation will be clear. The spark plug will be applied to the-cylinder head in the ordinary I manner. By unscrewing 13 a sufficient distance, the yoke may be slipped onto the plug from one side and, when the parts are in seats and the screw into alinement.

A great advantage of the construction disclosed herein resides in the fact that the gaseous fuel for starting the engine is conveyed directly-to the points between which the spark is formed and that it surrounds these points and is in condition to ignite any charge that may be within the cylinder. Further advantages of this construction are its extreme simplicity and its adaptability for general application.

Having thus described my invention, what I claim is 1. The combination of a spark plug having a chambered outer casing extending outwardly from the spark point and provided with a port in its outer portion extending through the wall thereof from said chamber, said port merging with a tapered recess in the outer wall of the casing, a supply conduit having a tapered end corresponding to the tapered recess, a supporting yoke or frame for said conduit, and adjustable means connected with said frame and adapted to engage the casing and force the conduit end into its seat.

2. The combination of a spark plug having a chambered outer casing extending outwardly from the spark point and provided with diametrically opposed ports in its outer portion communicating with the chamber of the casing and each merging with a recess, a supply conduit having an end shaped to fit into one of the recesses, a supporting yoke for such conduit end, and a screw opposed to Copies of this patent may be obtained for the conduit end and carried by the yoke and having a projection adapted to enter the other recess.

3. The combination of a spark plug having a port in the wall of its outer casing communicating at its inner end with the interior of said casing, a substantially U- shaped frame or yoke adapted to receive the casing between the opposed ends thereof, a gas supply conduit carried by one of the arms of the frame or yoke, and adjusting means carried by the other arm of the frame or yoke and adapted to engage the casing and force the conduit to a seat coiiperating with said port.

4. The combination of a spark plug hav- ..ing a port in the wall of its outer casing communicating at its inner end with the interior of said casing, said port being surrounded by a seat; a supporting frame, a gas supply conduit carried by said frame and having an end formed for cooperating with said seat, and adjusting means carried by said frame and adapted to engage the casingand force the end of said conduit against said seat.

5. The combination of a cylinder, a spark plug having its outer casing projecting outside of said cylinder, a supporting frame or yoke, a conduit having a tapered end carried by said frame or yoke, and adjusting means carried by said frame or yoke and adapted to engage a portion of the casing opposite the conduit end and force the latter to a seat against said casing, the casing being provided with a port having a tapered outer end adapted to receive the tapered end of the conduit.

In testimony whereof, I hereunto affix my signature in the presence of two witnesses.

HAROLD B. ANDERSON.

Witnesses J. B. HULL, BRENNAN B. WEsT.

five cents each, by addressing the Commissioner of Patents,

Washington, D. G. 

